INDEX. 



505 



iris, 342 ; of Jungermannise, 67 ; 

 Gottsche on, 87; of Madotheca pla- 

 typhylla, 67 ; of Marchantia poly- 

 morpha, 121 ; first noticed by Unger, 

 127 ; Tkuret on, 128 ; of mosses, 

 Unger on, 176 ; Schimper and 

 Tiiuret on, 177 ; of Pellia epiphylla, 

 30; observations on, by Schacht 

 and Thuret, 31 ; production of, by 

 small spores of Pilularia, 323 ; ob- 

 served by Nageli, 335 of Polytri- 

 chum formosum, 154; of Selaginella 

 Helvetica, 395 ; of Sphagnum, 155 ; 

 of Salvinia nutans, 331. 



Sphagnum, antheridia of, 154 ; pitted 

 cells of, 134 ; development of fruit 

 of, 159 ; development of leaf of, 135 ; 

 ramification of, 137; growth of 

 stem of, 129 ; spermatozoids of, 

 185 ; terminal bud of, 129- 



Sphagnum acutifolium, leaf of, 143. 



Sphagnum cuspidatum, pro-embryo of, 

 174. 



Sphagnum cymbifolium, development of 

 fruit of, 159. 



Sphagnum squarrosum, development of 

 fruit of, 159 ; cells in leaves of, 

 142. 



Sporangia, of Equisetum, formation 

 of, 281 ; of ferns, 256 ; of Isoetes la- 

 custris, formation of, 364 ; Schleiden 

 on, 364 ; of Pilularia, development 

 of, 318 ; of Selaginella, production 

 of, 385 ; views of Bischoff and von 

 Mold on, 387. 



Spore mother-cells of Aneura multifida, 

 45 ; of Anthoceros, 14—17 ; von 

 Mold on the formation of septa in, 

 16 ; of Blasiapusilla, 82 ; of Equi- 

 setum, 282 ; of ferns, 256 ; of Fos- 

 sombronia pusilla, 82 ; of Fridlania 

 dilatata, 81 ; of Isoetes lacustris, 

 365 ; of Jungermannia bicuspidata, 

 78, 79, 81; of mosses, 160; of 

 Pellia epiphylla, 38 ; of Pilularia, 

 319; of' liiccia glauca, 96; of 

 Puella, 100; of Targionia hypo- 

 phylla, 120. 



Spores of Anthoceros, 13, 17, disper- 

 sion of, 18 ; of Equisetacese, deve- 

 lopment of, 283, 290 ; Sanio's obser- 

 vations on, 286 ; germination of, 

 291; of ferns, 182, 256; of Frul- 

 lania dilatata, germination of, 51 ; 

 of Gymnostomurn pyriforme, 167 ; of 

 Isoeteje, Mettenius on, 337 ; of Jun- 



germannia, von Mohl on the deve- 

 lopment of, 86 ; observations on 

 the germination of, by Hedwig, 

 Nees von Esenbeck, Bischoff, 

 Gottsche, and Gronland, 83, 84; of 

 Jungermannia bicuspidata, germina- 

 tion of, 52 ; of Marsilea pubescem; 

 germination of, 326 ; of mosses, 

 Hedwig on, 175 ; of Pellia epi- 

 phylla, 21 ; development of, 39 ; 

 their importance in the study of 

 cell-formation, 39 ; irregularities 

 in, 41 ; of Phascum cuspidatum, 

 164 ; of Pilularia, development of, 

 319; germination o f large, 321; pro- 

 duction of spermatozoids by small, 

 323; of Radula complanata, 55; 

 of Pthizocarpese, Schleiden's opi- 

 nions on, 335 ; of Puella, 100 ; of 

 Salvinia nutans, 328, 330 ; Met- 

 tenius on, 330 ; production of Sper- 

 matozoids by small, 331 ; of Sela- 

 ginella, production of, 338. 



Stem, of Anthoceros, 3 ; arrangement 

 of cells in, 4 ; of Aspidium fiUx-mas, 

 227 ; of Blasia pusilla, 47 ; of 

 Equisetacese, growth of, 267 ; of 

 Equisetum,' structure of, 271 ; of 

 ferns, growth and bifurcation of, 

 262 — 264 ; Pringsheim and Irmisch 

 on, 264 ; structure of, described by 

 Vou Mohl, Brogniart, Stengel, 

 262 ; Karsten and Mettenius, 263 ; 

 of Isoetes lacustris, structure of, 356, 

 357 ; development of, 361 ; of Mar- 

 chantiese, 110 ; of Orthotrichum 

 affine, 139 ; of Pilularia, 325 ; of 

 Pteris aquilina, growth of, 211 ; 

 cellular hairs of, 212 ; structure of, 

 213 ; of Selaginella, furcation of, 

 375, 380 ; of Sphagnum, cell-multi- 

 plication in, 130 ; growth of, 129. 



Stem-bud of Aspidium Jilix-mas, 227 ; 

 of Pteris aquilina, formation of 

 vessels and bast-cells in, 217 



Stengel on the stems of ferns, 216. 



Stigma, so-called, of Mosses, 151. 



Stipule, of Muratlia cicutcefolia, pro- 

 duction of, 254; of Ophioglossum 

 vidgatum, 313; of Selaginella, first 

 observed by R. Muller, 378. 



Stolons of Nephrolepis, 247. 



Stomata, of Marchantieas, 110; of 

 the antheridal discs of Marchantia 

 polymorpha, 121 ; of the receptacle 

 of Marchantia polymorpha, 117. 



33 



